//  Copyright 2005-2011 Jason Aaron Osgood, Jean-Francois Poilpret
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.plealog.prefs4j.implem.ui.tools;

import java.awt.Component;

interface HeightGrowPolicy
{
	/**
	 * Checks if a {@link Component} can grow in height. 
	 * @param component the component to test
	 * @return {@code true} if {@code component} has a variable height;
	 * {@code false} if {@code component} has a fixed height.
	 */
	public boolean canGrowHeight(Component component);
	
	/**
	 * Computes the maximum amount of extra height that a {@link Component} can
	 * use.
	 * @param component the component to test
	 * @param extraHeight the amount of available extra height 
	 * @return the maximum amount of extra height that {@code component} can use
	 * without exceeding {@code extraHeight}
	 */
	public int computeExtraHeight(Component component, int extraHeight);
}
